摘要
针对金沙江“11.03”白格堰塞湖溃决洪水问题,采用DB-IWHR溃坝洪水分析模型预测了金沙江“11.03”白格堰塞湖的溃决洪水过程。在此基础上,分别采用分段马斯京根法、分层马斯京根法、非线性马斯京根法演算了白格堰塞湖至巴塘、奔子栏、石鼓及梨园断面的洪水过程,并结合以上断面实测洪水过程进行了精度评价。结果表明,三种方法均可较好地模拟洪水演进过程。分层马斯京根法相比分段马斯京根方法,预测结果在峰现时差及洪峰相对误差指标上相对较优。非线性马斯京根法的预测成果在峰现时差上最为精准,但在各断面实测洪峰预测上偏大较多。研究成果可为今后时效要求较高的堰塞湖溃决洪水演进计算提供理论及技术参考。
The DB-IWHR dam-breach flood analysis model was used to predict the dam-breach flood process of "11.03" Baige barrier lake on Jinsha River. On this basis, the segment Muskingum method, the layered Muskingum method and the nonlinear Muskingum method were used to calculate the flood process of the downstream section(Batang, Benzilan, Shigu, Liyuan), and conducted the accuracy evaluation with the measured flood process. The results show that the three methods can calculate the flood routing process well. Compared with the segment Muskingum method, the prediction results by the layered Muskingum method are better in the index of peak time difference and relative error of flood peak. The prediction result by the nonlinear Muskingum method is the most accurate in the peak time difference, but it is higher compared with the measured flood peak of each section. The research results can provide reference for the barrier lake dam-breach flood routing with higher aging requirements in the future.
作者
杨开斌
许浩
李天庆
夏建荣
杨子俊
YANG Kai-bin;XU Hao;LI Tian-qing;XIA Jian-rong;YANG Zi-jun(PowerChina Kunming Engineering Corporation Limited,Kunming 650051,China)
出处
《水电能源科学》
北大核心
2022年第3期71-74,共4页
Water Resources and Power
基金
中国电力建设股份有限公司项目(DJ-ZDZX-2016-02)。
